aftermarket 340 main caps?

Prine said
Find a nice JunkYard 318 and steal them...same thing....318 wont miss em'

EDIT: looks like you already doing my recommendation.

But then again....if you think a set of magical "340" Main Caps are worth all your stress....by all means

Factory 318's use a different main cap than a 340. Although they will work the 340 caps are taller and meatier. I just went through this on my 340.